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Extraction code: 1234? Computer planning textbook: A Concise Course of Computer Foundation and Application, a public course in colleges and universities in the Twelfth Five-Year Plan, is compiled according to the requirements of the Computer Teaching Steering Committee of the Ministry of Education, the Basic Requirements of Computer Teaching in Colleges and Universities and the Computer Grade Examination Outline for College Students of Shanghai Education Commission (revised edition 20 12). Combining years of teaching experience and adapting to the cognitive characteristics of computer information technology, it is nonlinear to make students stand at the forefront of information technology development in a short time. The book consists of seven chapters, including introduction to information technology, operating system and office software, multimedia application technology, digital communication, computer network, website and webpage, and information security. The teaching content is concise and clear, and each chapter is equipped with "consolidation exercises" for readers to test and consolidate the teaching content.